Flushing device.



No. 7s3,|6|. Patented Nov. n, |902.

` w. scoTT.

FLUSHING DEVICE.

(Application med pn-15, 1901.)

No Model.)

- UNITED STATES WILLIAM SCOTT, OF MED FLUSHING FORD, MASSACHUSETTS.

DEVICE.

SPECIFICATION forming part of Letters Patent N o. '713,1 61, dated November 1 1, y1 902.

Serial No. 55.880. (No model.)

To all whom it ntf/ty concern.:

Beit knownthatl, WILLIAM SCOTT, of Medford, county of Middlesex, and AState ofMassachusetts, have invented an Improvement in Flushing Devices, of which the following description, in connection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

The present invention relates to a flushing device, and is embodied in a controlling-valve of novel construction and arrangement adapted to be located near the closet in eases, for example, where a number of, closets are supplied from a single tank or directly fromthe city water-supply. The valve embodying the invention is automatic in its operation, being opened or closed by dierential pressures, t-he pressure being controlled by a small valve having a suitable actuator, such as a knob or push-button, having a comparatively small movement; and the invention' consists in certain novel details of construction and arrangement, as will'be hereinafter more particularly described and finally claimed.

Figure 1 is a vertical section of a valve embodying the invention, the parts being shown in normal condition and the flush-pipe and a portion of the bowl being shown in elevation. Fig. 2 is a similar section, showing the parts in abnormal position to illustrate the means for opening the valve.

The valve a is shown as located in a chamber b, into which leads the service-pipe c and from the bottom of which extends a flushpipe D, leading to the bowl- A, the chamber being provided near its lower end with a valve-seat b2 for the valve a. The said valve a is shown as provided with a feather-guide a2, which extends into the outlet from the chamber to which is connected the pipe D, the said guide serving to keep the valve centered and in proper position to close the outlet when seated and also to throttle the outlet at a certain stage of the valves descent, a portion 0.20 of theguide above the feather part being cylindrical and loosely fitting in the outlet-passage.

Connected with the valve a, as by a stem a3, is a piston a4, shown as provided with cupleather packings and having a substantially water-tight or working iit in the chamber b, which is shown as cylindrical. The said piston is located above the inlet from the service-pipe c, there being direct communication between the said service-pipe and that portion of the chamber which is below the piston. Unless, therefore, back pressure is eX- erted upon the upper side of the piston the direct pressure of the water entering the chamber from the service-pipe will tend to move the said piston upward and unseat the valve ct, (which is made smaller in diameter than the said piston,so that the pressure on the valve is overbalanced by that on the piston,) thereby opening direct communication between the pipe c andthe pipe D, as shown in Fig. 2. To maintain the valve normally seated, therefore, that part of the chamber which is back of the piston is placed in communication with the service-pipe'rc, as by a by-pass d, which communicates with a small port d2 in an independent socket-piece c4, fitted in the Wall of the chamber and intercepting the by-pass d and leading into the chamber at the upper side of the piston a4. As herein shown, the said port d2 is formed in the wall of the socket e4, which serves as a guide for the valve-actuating member e, which is longitudinally movable across the chamber and provided with an actuatingknob or push-button c2, the said memberbeing suitably packed where it passes through the wall of the chamber and held in its normal position by means of a spring e3, seated in the socket e4 against the closed outer end thereof. The said actuating member or stem has a loose tit in its guide-socket c4, so that water from the by-pass d will enter the chamber around the stem, the inlet for the water, however, being very restricted, so that the chamber will till slowly. The said valveactuating member c is adapted to operate the vent-valve f2, which is normally seated on a suitable valve-seatj3, surrounding an opening or port Which leads from the chamber b into a by-pass f, which leads to the iiush-pipe D or other outlet below thevalve a, the opening into said by-pass being comparatively large, so as to allow the water. to escape freely and rapidly when the valve f2 is unseated.

As is clearly shown in the drawings, ifthe push-button c2 is pressed inward with relation to the chamber the valve j2 will be unseated, thus opening communication between IOO the upper portion of the chamber and the flush-pipe or other outlet and adording a free escape-passage for the water behind the piston, while the inlet to said chamber from the service-pipe is so restricted that water cannot get iuto the chamber fast enough to maintain the back pressure. An unbalanced pressure therefore will at once be exerted on the under side of the piston a4, which will carry the valve away from its seat, as shown in Fig. 2, the action being quick, since the vent-passagef2 is made of suiiicient size to immediately relieve the pressure above the piston a4. When the push -button e2 is released, the valve-actuating device c is at once restored to normal position by means of the spring e3, thus closing the outlet from the chamber b, which is then gradually refilled through the by-pass d. Since the water enters slowly through the restricted inlet, some time elapses before the valve will return to its seat, and during the latter part of its return movement the cylindrical upper portion'a20of the guide throttles the outlet, but does not wholly close the same, thus insuring the slow iiow of water which is necessary to rell the bowl.

To maintain the main valve in position in the chamber and limit the upward movement thereof after the said main valve is wholly opened, the said chamber is shown as provided with a bridge-piece b3, so located as to be engaged bythe valve-stem d3 when the said Valve is fully opened, as indicated in Fig. 2.

For convenience in assembling the parts the chamber b is shown as provided with a removable cover b, the opening closed by the said cover being of suiiicient size for the insertion of the valve and piston and also for the bridge-piece, which is removable and held in position by screw-threads, that portion of the chamber which contains the piston and the said screw-threads being slightly smaller in diameter than the portion above.

The valve-actuating member e is arranged to be inserted endwise through a suitable opening, and the spring e3 is inserted in the socket-guide e4, which is preferably held in place by a screw-thread,as shown. The valve f2 is also arranged to be threaded on the actuating member e, which can be passed through the said valve while it is being inserted and then turned to screw the said valve into place. The packing-gland e5 serves to afford a watertight joint around the said actuating-stem. The push-button e2 may be located, as shown, directly above and back of the bowl, whereby the closet may be flushed by leaning back against the button, if desired.

It is not intended to limit the invention to the specific construction shown and described, since modilications may be made without departing from the invention.

I claiml. A flushing device colnprising a chamber having a main open water-inlet and a main outlet adapted to be connected with a liushpipe, a valve for controlling said outlet, a piston arranged in said chamber above said inlet and connected with said Valve, an inletduct in the wall of said chamber communieating with the water-inlet, an independent socket-piece fitted in the wall of the chamber and intercepting the said inlet-duct and opening into said chamber and provided with a port communicating with said inlet-d uct, an outlet-duct also in the wall of said chamber and provided with an inlet-opening arranged opposite said socket-piece and an outlet communicating Withthe flush-pipe, a valve-stein loosely fitted in said socket-piece and extending across the chamber and passing through the inlet-opening of the outlet-duct and the wall of the chamber and provided with an operating-knob, a valve on said stem adapted to seat against the inlet-opening of said outlet-duct, a spring in said socket-piece engaging said stem for normally seating said valve, and a removable bridge-piece arranged in said chamber between said valve-stem and piston, substantially as and for the purpose described.

2. A iiushing device comprising a chamber having a main open water-inlet and a main outlet adapted to be connected with a Hushpipe, a valve for controlling said outlet, a piston arranged in said chamber above said inlet and connected with said valve, an inletduct in the wall of said chamber communieating with the water-inlet, an independent socket-piece fitted in the wall of the chamber and intercepting the said inlet-duct and opening into said chamber and provided with a port communicating with said inlet-duct, an outlet-duct also in the wall of the chamber and provided with an inlet-opening arranged opposite said socket-piece and an outlet communicating with the Hush-pipe, a valve-stein loosely fitted in said socket-piece and extending across the chamber and passing through the inlet-opening of the outlet-duct and the wall of the chamber and provided with an operating-knob, a valve on said stem adapted to seat against the inlet-opening of said outletduct, a spring in said socket-piece engaging said stem for normally seating said valve, a removable bridge piece arranged in said chamber between said valve-stem and piston, and a removable cover for the chamber, whereby the said parts are readily accessible for repairs and assembling, substantially as described.

In testimony whereof I have signed my name to this specificationin the presence of two subscribing witnesses.

WILLIAM SCOTT.

Witnesses:

NANCY P. FORD, HENRY J. LIvERMoRE.

IOO

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